DK656987A - Kredsloeb til reduktion af baggrundsstoej i telekommunikationssystemer - Google Patents

Kredsloeb til reduktion af baggrundsstoej i telekommunikationssystemer

Info

Publication number
DK656987A
DK656987A DK656987A DK656987A DK656987A DK 656987 A DK656987 A DK 656987A DK 656987 A DK656987 A DK 656987A DK 656987 A DK656987 A DK 656987A DK 656987 A DK656987 A DK 656987A
Authority
DK
Denmark
Prior art keywords
reduction
circuit
background noise
telecommunication systems
telecommunication
Prior art date
Application number
DK656987A
Other languages
English (en)
Other versions
DK656987D0 (da
Inventor
Elve Desiderius Jozef Moons
Jozef Dirk Guido Leo Cannaerts
Original Assignee
Alcatel Nv
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from BE2/61114A external-priority patent/BE905925R/nl
Application filed by Alcatel Nv filed Critical Alcatel Nv
Publication of DK656987D0 publication Critical patent/DK656987D0/da
Publication of DK656987A publication Critical patent/DK656987A/da

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
    • H04M1/6008—Substation equipment, e.g. for use by subscribers including speech amplifiers in the transmitter circuit

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Transmitters (AREA)
  • Amplifiers (AREA)
DK656987A 1986-12-16 1987-12-15 Kredsloeb til reduktion af baggrundsstoej i telekommunikationssystemer DK656987A (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE2/61114A BE905925R (nl) 1986-12-16 1986-12-16 Telecommunicatie-inrichting en daarin gebruikte ketens.

Publications (2)

Publication Number Publication Date
DK656987D0 DK656987D0 (da) 1987-12-15
DK656987A true DK656987A (da) 1988-06-17

Family

ID=3865845

Family Applications (1)

Application Number Title Priority Date Filing Date
DK656987A DK656987A (da) 1986-12-16 1987-12-15 Kredsloeb til reduktion af baggrundsstoej i telekommunikationssystemer

Country Status (2)

Country Link
EP (1) EP0271948A3 (da)
DK (1) DK656987A (da)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU634510B2 (en) * 1989-01-26 1993-02-25 Plantronics, Inc. Voice communication link interface apparatus

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA996692A (en) * 1974-12-12 1976-09-07 Russell W. Brown Digital control of a loudspeaking telephone system
US4119797A (en) * 1977-06-29 1978-10-10 Technology Development Corporation Voice operated switch having an activation level which is higher than its sustaining level
US4147892A (en) * 1978-01-30 1979-04-03 Tridar Speakerphone with dynamic level discriminator
FR2423097A1 (fr) * 1978-04-14 1979-11-09 Navelec Ste Navale Electricite Dispositif de transmission electro-acoustique a postes multiples
CA1210174A (en) * 1984-06-29 1986-08-19 Mihail S. Moisin Handsfree communication apparatus and method
JPS61242499A (ja) * 1985-04-19 1986-10-28 シユア・ブラザ−ズ・インコ−ポレイテツド マイクロホン装置

Also Published As

Publication number Publication date
DK656987D0 (da) 1987-12-15
EP0271948A3 (en) 1989-05-03
EP0271948A2 (en) 1988-06-22

Similar Documents

Publication Publication Date Title
KR880701514A (ko) 전기통신 스위칭 시스템 및 스위칭 회로 할당방법
DK590187D0 (da) Trykt-kredsloebsantenne
DK638687D0 (da) Baereboelgereproducerende kredsloeb
DK345787D0 (da) Signaladskillelseskredsloeb i stereofonisk system
ATA36487A (de) Funk-telefonsystem
NO173080C (no) Kommunikasjonssystem
PT84929A (de) Fernsprech-teilnehmerschaltung
DK92990D0 (da) Transient elimineringskredsloeb for telekommunikationsanvendelser
DK656987D0 (da) Kredsloeb til reduktion af baggrundsstoej i telekommunikationssystemer
ES530736A0 (es) Perfeccionamientos en los sistemas telefonicos
DK429984A (da) Konferencebrokredsloebsarrangement
ES543466A0 (es) Perfeccionamientos en los circuitos telefonicos
DK683888D0 (da) Telefonkredsloeb
BR8401033A (pt) Conjunto de circuitos de garador
KR880011052U (ko) 음성 다중 모우드의 자동 전환회로
KR880003555U (ko) 잡음 제거회로
KR870012775U (ko) 스위칭 노이즈 개선회로
KR870015569U (ko) 전화기 발신회로
KR880011050U (ko) 다방식 음성수신회로
DK161293C (da) Hoejttalersystem af compoundtypen
DK689687D0 (da) Telefonbeskyttelseskredsloeb
KR870019297U (ko) 뮤우트 확장 회로
KR870015545U (ko) 뮤팅 회로
KR870011506U (ko) 전화기회로
KR880008891U (ko) 전화의 음성판별 회로

Legal Events

Date Code Title Description
AHB Application shelved due to non-payment